Hi Anna ...
During the summer months, for about four months, the day temps are in the mid to high 90s and low 100s, with low humidity. During the winter months, the night temps are around 20F to 10F, but can sometimes drop to single digits.
The soil in my garden never freezes and I have very little die back with the roses. When I do get snow, it rarely sticks for more than a few days. There have been times when it has hung around for a month or more, but that is the exception. I don't live in a snow belt.
Rainfall varies. They say our average rainfall is 33 inches a year. A dry year is around 25 inches. A wet year is around 40 inches. Last year we got 44 inches.
My garden does not retain water, so even in a very heavy rain storm, you won't see puddles of water. That's the nature of a water shed. There are so many crevices in the rocky-clay soil, the water drains down and out very quickly. It's also why it is difficult for me to build sustainable soil in the garden.
I don't know if flowering really slows down all that much here in summer. I do know that things fry ...